I'm experiencing the same outcome as Scott, where the installation completes with the "User Analytics" application package component showing the failed status. The App did not show up on the QRadar tabs.

Prior to this installation, i have been using the UBA 1.1.0. I've performed an uninstallation of the 1.1.0 from the extension management before running the UBA 2.1.0 installation.

I've patched QRadar to 7.2.8 patch 8, retry installation with the same results.